Went to the drag strip this week-end. MY car has a Mc cloud single disc clutch in it and has never shifted very good since installed when you are on the car hard it is fine under normal conditions. But after about 5-6 runs over 3 hrs the clutch would be very soft or sponge like when I would go to shift at the end of the run. I would push it in once and then it would feel like a normal pedal. Let me add I have talked to mccloud and they sold me a larger line that runs from the master to the slave and said this should solve my problem. No such luck same as always. Some input would sure help.